Facebook headquarters secured after threat made: police

Eric M. Johnson

Police searched and secured the headquarters of social media giant Facebook on Tuesday evening (US time) after receiving a threat against the company, which San Francisco-area authorities said turned out to be "totally not credible".

"It was a totally not credible, unsubstantiated threat," Bertini said, though he declined to say what the specific threat was. "I am not even sure that it was specifically to the Menlo Park campus of Facebook."

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Facebook declined to comment on the incident.

The San Francisco Police Department did not immediately respond to requests for comment.